pls heeeeeelp me ?
TECH Apprentice
Joined: Aug 2004
Posts: 362
Likes: 0
The main problem is boring the LT1 block .050 over. Is there a particular reason why you want a 400? Is it just to say you have one or have your cylinders already seen .030 or .040 and need it again? If that's the case I'd say spend a few hundred dollars on a new block and bore it .030 and go with a 383 or 396.
Well to say all of this I'm assuming a .050 overbore with a 3.875" crank right? If so, why don't you look for the extra cubes through stroke and not bore? With that much of an increased stroke you're going to run into clearancing issues and cost. With the added bore you're going to be looking at wall thickness issues and cost.
Personally I wouldn't do anything besides the standard .030 over unless the walls needed it.
Also....are you posting this in the right section? You're asking about LT1's but your sig is an LS1???
Well to say all of this I'm assuming a .050 overbore with a 3.875" crank right? If so, why don't you look for the extra cubes through stroke and not bore? With that much of an increased stroke you're going to run into clearancing issues and cost. With the added bore you're going to be looking at wall thickness issues and cost.
Personally I wouldn't do anything besides the standard .030 over unless the walls needed it.
Also....are you posting this in the right section? You're asking about LT1's but your sig is an LS1???
